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巴氏合金是减摩性最好的轴承材料,但是其疲劳强度低,在高载荷下轴瓦合金层容易开裂剥落。铜铅和铝锡轴承合金虽然强度较高,但它们走合性能差,制成的轴瓦要求较高的曲轴硬度和加工精度。为此,作者对过去研制目前已普遍使用的铅基合金CHPbSb 10-6作了改进。通过调整合金元素含量,提高其强韧性。新的铅合金具有比原来合金高12%的抗拉强度,甚至高于传统的锡基巴氏合金CHSnSb 4.5-4.5。这种合金的轴瓦装于东风EQ 140载货车发动机和JZ 211 B 转子发动机后的装车试验结果是令人满意的。
Babbitt is the best anti-friction bearing material, but its low fatigue strength, under high load bearing alloy layer cracking easily spalling. Copper lead and aluminum tin bearing alloy, although higher strength, but they go together with poor performance, made of bearings require higher crankshaft hardness and machining accuracy. For this reason, the author made an improvement on the past research and development of lead-based alloy CHPbSb 10-6. By adjusting the alloying element content, improve its toughness. The new lead alloy has a tensile strength 12% higher than the original alloy, even higher than the traditional tin-based Babbitt CHSnSb 4.5-4.5. The loading test results of this alloy bearing bush on the Dongfeng EQ 140 truck engine and the JZ 211 B rotor engine were satisfactory.